Apabila menggunakan Python untuk pembangunan perniagaan, anda perlu menyimpan beberapa data ke storan fail setempat untuk memudahkan analisis dan paparan data seterusnya.
Dengan melihat keperluan, dapat disimpulkan bahawa data perlu disimpan sebagai fail tempatan (ini adalah operasi yang melibatkan fail adalah kandungan asas dan anda boleh terus menggunakan fail yang biasa digunakan Operasi fail dirangkumkan ke dalam fail dan boleh dipanggil terus kemudian.
#文件操作 import pickle #读取文件的所有内容(返回字符串) def ReadFileAllInfoAsStr(filePathAndName): try: with open(filePathAndName) as fileObj: fileInfos=fileObj.read() except FileNotFoundError: msg="很抱歉,文件【"+filePathAndName+"】不存在" print(msg) else: return fileInfos #读取文件的所有内容(返回列表) def ReadFileAllInfoAsList(filePathAndName): try: with open(filePathAndName) as fileObj: fileInfos=fileObj.readlines() except FileNotFoundError: msg="很抱歉,文件【"+filePathAndName+"】不存在" print(msg) else: return fileInfos #写入信息到文件(覆盖原有内容) def WriteInfo(needWriteInfo,filePathAndName): try: with open(filePathAndName,'wb') as fileObj: tmpBytes = bytes(needWriteInfo,'utf8') fileObj.write(tmpBytes) except Exception as e: print(e) #追加信息到文件中 def AppedInfo(needWriteInfo,filePathAndName): try: with open(filePathAndName,'ab') as fileObj: tmpBytes = bytes('\n'+needWriteInfo,'utf8') fileObj.write(tmpBytes) except Exception as e: print(e) #写入对象到文件 def WriteObj(needWriteInfo,filePathAndName): try: with open(filePathAndName,'wb') as fileObj: pickle.dump(needWriteInfo,fileObj) except Exception as e: print(e) #读取文件内容 def ReadObj(filePathAndName): try: with open(filePathAndName,'rb') as fileObj: tmpObj = pickle.load(fileObj) except Exception as e: print(e) else: return tmpObj import json import codecs #写入信息为json文件 def WritInfoAsJson(needWriteInfo,filePathAndName): try: with codecs.open(filePathAndName,'wb',encoding='utf-8') as fileObj: json.dump(needWriteInfo,fileObj) except Exception as e: print(e) #读取json文件信息 def ReadInfoToJson(filePathAndName): try: with codecs.open(filePathAndName,'rb',encoding='utf-8') as fileObj: tmpJson=json.load(fileObj) except Exception as e: print(e) else: return tmpJson
import FileOPC print('\n写入信息到文件中') filePathAndName2='file/test.txt' tmpstr="测试写入内容abcdefg" FileOPC.WriteInfo(tmpstr,filePathAndName2) print('\n将字符串转为字节1') tmpbytes1=str.encode('测试写入内容','utf-8') print(tmpbytes1) print('\n将字符串转为字节2') tmpbytes2=bytes('测试写入内容','utf-8') print(tmpbytes2) print('\n追加信息到文件中') FileOPC.AppedInfo('追加信息123',filePathAndName2) FileOPC.AppedInfo('测试追加信息456',filePathAndName2) print('\n切分字符串') splitStr="Alice in wonderlan 切割字符串,1,2,3,45,6" tmpSplit = splitStr.split(',') print(tmpSplit) print('\n写入对象信息到文件') filePathAndName3='file/test2.txt' FileOPC.WriteObj('测试写入对象信息112254799abcadshofdsaujfoduasfoj',filePathAndName3) print('\n读取文件对象') tmpObj = FileOPC.ReadObj(filePathAndName3) print(tmpObj) import json print('\n写入信息保存为Json文件') filePathAndName4='file/testJson.json' jsonDatas={"101001":[1,3,5,7,9],"101009":["张三","李四",'王五']} #jsonDatas=[2,3,5,7,11,13] FileOPC.WritInfoAsJson(jsonDatas,filePathAndName4) print('\n读取Json文件信息') tmpJson=FileOPC.ReadInfoToJson(filePathAndName4) print(tmpJson)
Atas ialah kandungan terperinci Bagaimana untuk melaksanakan kelas pembantu operasi fail dalam Python. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!